Side ported well casing cementing collar



March l0, 1953 F. H. LEE

SIDE PORTED WELL CASING CEMENTING COLLAR Filed Feb. 24. 1947 A 5,.. FW

i N w T A Patented Mar. l0, 1953 www; SIDEVPORTAEDWELL CASING CEBIENTINGCOLLARv Erancis Hampton Lee, San Pedro, Qalif., assignor oy 'Baker'OilTools, Inc., Vernon, 'Cal if ,'ztfeor ooreeoe of eoiitoroioiApplieatiion Fehmarn 24, 19g?, ,Serial N0,.- 730353.

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The present invention relates todeVies ,adopted to frxn prt of Aetvvel'l oesi'ngflinen'or conduit string, and having" side` lqortsiseleotively. opened or Vo'losed'to on'trfo'l lete'relflw' of f lixidsAbetween the iiiiteriefrr `e1`ei ieriei` f tile -eeiiliitii string.

A11 object, of the iiiveiiiieii iS te Provide en imijroved telescopiosnide ij'orted ofll'r" adopted t0. De, lliolpf-fi@d in a; @Eising i* 91-Smllili ,illdut., string, whose side een loe both opened and closed bydiierential and"telesopic"movernent of the. metioL oompelieiits ef'.theeilief 'reeooriee to rotation. of; too oeeioe oeriiie ifi eiiieilefiireer' tion.

this invention hee, other obieei eiiieeeeete which will beoomeeooereiitfre t eeiiiiideieiioii of the embodiment shown in the drawpanving and. frmiii Pv iii 2f the @iQ-Sem Spie-Gif cation, This forniywill noorvv be desorib'ed iii detail, but it ie to be iinderotood that"sliehfdetiled Fig- 2 is portie! 1oneitiisiiiieiv Seeiieii of theapparentes., Wit-ii its, Seite in ioif tion.

inthe position 'tovvh A1 1 to refo'lose, the ports.'

Y*As disolo'sd inthe drawings, i A is connected in a casing st'lriiilgbyto uperfand lovver /Cilg se o though Speoio roiereiiee iemeiie is. tionto the useA of the, invention as' ort oli tt string, it is'to beiinderstood `t i;v 'l maybe installed'as e; componentpttrt f e A orsimilar oondoit YSolilg positioned' in V:t Well boI i 'rho p'paratjos.inoidos an 'opporirioor tio 1er member. l adopted fob? @hf lied an i1 pecasing section B, and lov/ver, outer t ber H adapted tol te threodeidtritoA section i C. The 'upper menthe-ifm Within the lower rnernher fly'l'and the Wo y. ereehreeded together by? meeie, of. ,Straight e???teifrieil threads '1 en the .iiiiier member' .elia eemr'ieoioniiiieriieiiiifeedo '310,11 i114 o. vouter m ber.

VThe inner member loq is vp rovidecl with e plu;relty,of'eireumfeieiiiieiliy SPe'Cediii 1.4,' ood tire "enter moeite?lll tiene,

Fie 3 e, View: Similer te Fie 2. with; tide eerie:

' 'their here eee e Geiler @prefetti Qorrespondng side ports I5 toatllovv.y owof fluid to; ajndioi inner'sieotef It is loooted within andnnuliis loe'ztvt"een anfiipper Sleeve extension lid o ,fthe outermember' 'I Van'd the inner ,member I0."

This'sieovo'le is secured tofv tirov inner member ItY itsv straightinternalthreatclsv 2li engaging comeV ponton exter'riai'throajds 25j ontheflatter. It is to he'notedv that theexternal thread 2,15*'extend only'portvwaylolig the inner 'member lfljrjloeingl` speced'from the ports Uiand ari inner Inenbejr o s ho ider t defining the ond of, the poulpeI'23; and that thefcopnion threads '24"ori'the i'rirevr S'leYQH XIifd,TQI. its. UIJJI" end |511 @Whe tidlf Oiilper Way alone" its legth, inorder theft the i'nner'sleeve VIlifrii'ety thread upwrdly long the innermember AI Q and allovv the threads I 21125 toioeconie disengaged beforethe upper e'nd is sdtstatiauyfless than tho threaded connection 24," 2

too dorer 'ooe of the annales' 2o- Rototion beting/eenv the inner sleeve(6 and the ita or the inner sleevek can @but the shoulder zj otiter"sleeve yportion H it d fY the outer Inernber'is prevented by d.Ysuitable spline conne'otion, inthe' form of o, hey 21 Seoiirl 'to theotersleeve vH221; ee. by., ineens of, 'Welding meieiiei 28, Wiiieh'keyiie reo ved Within a'key--:w'ay Zfn Vthe exteror'of the inner sleeveloin siich fashonas to 'hermit reieiiie 'leiieitlidinei ihoveineritbetween the iiriei,

sleeve I5- at .d buter sleeve 'Il'i'ag' Ihe threetded coinneotion i2,I3, between the upper end lower members IQ, lol

5 Between the upper'inember lil and' imiei' Seen. threadedeonrieetioiio's, are io'ieff Sleeve i655 o eitebiy ef tile "Seitehendffor exorr'itl'o; the thr ded 'oonneotionsm'ayb'o right rid, and tir3 inner sleeve I6 to the upper member I0 may be twice the lead of thelower threads I2, f3 connecting the upper and lower members IB, IItogether. As a result, rotation of the upper member I0, as to the right,threads it downwardly within the lower. member I I and at the same timeVeffects an upward feeding of the sleeve I6 along the upper and lowermembers I0, Il.

The collar apparatus A is assembled with the inner member I threadedpart way into the outer member II, the sleeve I6 occupying a lowerposition in substantially full threaded connection with the inner memberI0, with its lower portion Il disposed across the inner ports I4 and itshead end Il in engagement with the seat I9 and seal ring 22 on the outermember II. As noted above, the upper side seal ring 20 is disposed abovethe ports I4 to prevent fluid :from passing therethrough. The collar,thus assembled, is threadedly attached to the upper and lower casingsections B, C and is run into the well bore as part of the casing string(Fig. l).

After the casing string has been lowered to the desired depth,circulating fluid may be pumped directly into the casing string andthrough the collar apparatus A for discharge from the casing string atsome point below the collar apparatus, as, for example, from a casingshoe (not shown) at the lower end of the casing string. Followingconditioning of the well bore by use of the circulating uid, a charge ofcement slurry may be pumped into the casing string and through thecollar (whose inner ports I4 are closed by the inner sleeve I6) forejection from the shoe at the lower end of the casing string, and forupward passage around the latter toward the collar.

Following vsetting and hardening of the lower charge of cement slurry,the upper portion of the casing string attached to the collar A may berotated to the right from the top of the well bore, which also effectsrotation of Vthe upper tubular member It and threads it downwardlywithin the outer tubular member Il, whose rotation is prevented byvirtue of its attachment to the lower portion of the casing string,which is held stationary by the cement disposed around its exterior. Thesplined connection '21, 29 also prevents the sleeve I6 from rotating,resulting4 in threading of the upper member Ill within the sleeve I5.Since both threaded connections I2, I3 and 24, 25 are righthand,rotation of the casing string to the right feeds the inner tubularmember I0 downwardly within the outer tubular member II and inner sleeveI6. But, since the lead of the upper threads 24, 25 is twice the lead ofthe lower threads I2, I3, the inner sleeve I6 is moved up along theinner member I0 twice the distance the latter moves down within theouter member II; that is, the net result is an upward movement of thesleeve I5 along the outer member II and the inner member I6.

If the casing string is rotated a predetermined number of turns, thesleeve I6 will be elevated to the position shown in Fig. 2, in which ithas moved upwardly to uncover the inner ports I4 and also the outerports I5, but the upper tubular member VI0 has not moved downwardlysufficiently to place the inner ports I4 down below the seat I9 and sealring 22 of the outer tubular member II. As a result of such relativemovement of the parts, the inner and outer ports I4, I5 are incommunication with one another and circulating fluids, followed by achargev of cement slurry, may be pumped directlyinto 4 the casing stringfor outward passage through the open ports and upward flowing throughthe annulus around the collar A and upper casing string.

Following discharge of the required amount of cement slurry, rotation ofthe casing string to the right is continued, which continues to feed theupper tubular member Ill downwardly within the lower tubular member iland the inner sleeve I6 relatively upwardly along the upper tubularmember I0. However, the threads 24, 25 on the inner sleeve and uppertubular member become disengaged to preclude further upward elevationalmovement of the inner sleeve I6 as a result of rotating the uppertubular member I0. Accordingly, continued downward threading of theupper member It within the lower member II results in the upper membercarrying the inner sleeve I6 with it toward the seat I9 on the lowermember, until the head end I8 again engages the seat I9 and seal ring 22(Fig. 3). The inner ports I4 are then reclosed to prevent passage offluid between the interior and exterior of the apparatus.

As the tubular string is rotated following engagement of the sleeve headend I8 with its companion seat I9, the shoulder 2B on the upper memberengages the upper end Ilia of the inner sleeve valve and forces its headend I8 firmly down against the seat I9 to prevent leakage therebetween.The fact of such rm engagement will be transmitted to the operator atthe top of the well bore, because of his inability to further rotate thetubing string, since engagement of the shoulder 26 with the upper endIlia. of the sleeve and engagement of the sleeve head end I8 with itscompanion seat I9 preclude further downward threaded movement of theupper member I within the lower member I I.

It is to be noted that the inside diameter through the collar apparatusA is no less than the inside diameter through the casing sections B, C,thus providing no restriction to prevent the passage of any devices,such as cementing plugs, completely through the collar. The ports I4 arepositively closed initially, and they are positively opened bymanipulation of the casing string, which causes the telescopic movementof the upper tubular member I0 within the lower tubular member II and adifferential movement of the valve sleeve I6 in an upward direction toopen the inner ports I4. A continuation of the rotary movement of thecasing string in the same direction again effects a positive closing ofthe ports I4 in leak-proof fashion.

y Having thus described my invention, what I claim and desire to secureby Letters Patent is:

l. Apparatus of the character described, including rst and secondtubular members telescopically arranged with respect to each other, eachof said members having means for connecting such member to a casingsection, said first member having a side port for allowing fluid flowbetween the interior and exterior of said first member, a sleeve movablelongitudinally along said first member for controlling flow of fluidthrough said port, means providing a first axial interconnection betweensaid first tubular member and sleeve in order that relative rotationbetween said first member and sleeve will shift said sleeve along saidfirst member to determine flow of fluid through said port, and meansproviding a second axial interconnection between said members in orderthat relative rotation'between said members will shift said secondmember 5. longitudinally with respect to' said firstm'ember. and itsport to determine fiow` of fiuid through. said port.

2. Apparatus of the chracter described, including first and secondtubular members telescopically arranged with respect to each other, eachof said members having means for connecting such member to a casingsection, said first mem. ber having a side port for allowing fluid fiowbe,- tween the interior and exterior of said first mern-` ber, a sleevemovable longitudinally along saidl first member for controlling fiow offluid through said port, means providing a first axial intercon` nectionbetween said first tubular member and sleeve in order that relativerotation between said rst member and sleeve will shift saidi sleeve.along said first member to determine flow of fiuid through said port,means providing a second axial interconnection between said members inorder that relative rotation between said members will shiftl saidsecond member longitudinally with respect to said first member and itsport to deter-- mine flow of fluid through said port, and means engagingsaid sleeve to resist its rotation.

3. Apparatus of the character described, including rst and secondtubular membersV telescopically arranged with respect to each other,each of said members having means for connecting such member to a casingsection, said first member having a side port for allowing fiuid flowbetween the interior and exterior of said first member, a sleeve movablelongitudinally along said first member for controlling fiow of fluidthrough said port, means providing a first axial interconnection betweensaid first tubular member and sleeve in order that relative rotationbetween said iirst member and sleeve will shift said sleeve along saidfirst member to determine flow of fluid throughl said port, and meansproviding a second axial interconnection between said members in orderthat relative rotation between said members will shift said secondmember longitudinally with respect to said first member and its port todetermine flow of fiuid through said port, said rst and second axialinterconnections being difierent from each other to produce movement ofsaid sleeve and secondv member different longitudinal distances withrespect. to said first member upon relative rotation between said rstmember and said second member and sleeve.

4. Apparatus of the character described, including first and secondtubular members telescopically arranged with respect to each other, eachof said members having means for connecting such member to a casingsection form-- ing part of a casing string, said rst member having aside port, a sleeve movable longitudinally along said first member forcontrolling flow of fluid through said port, a first threaded connectionbetween said first and second members, a second threaded connectionbetween said first member and sleeve having a different lead from thelead of said first threaded connection, whereby relative rotationbetween said first member and said second member and sleeve effectsrelative movement of said sleeve and second member differentlongitudinal distances along said first member to open and close saidport, and means engaging said sleeve to resist its rotation.

5. Apparatus of the character described, including first and secondtubular members telescopically arranged with respect to each other, eachof said members having means for connectingrslihf member' to a casingsection forming part; of a casing.- string, said first member having aside port, asleeve movable longitudinally along said first member forcontrolling flow of fluid through. said port, a first threadedconnection between said first and second members, a secondthreadedconnection between said first member andsleevel of the same hand as saidfirst threaded connection but having a different lead from the lead ofsaid rst threaded connection, whereby relative rotation between saidfirst member and said second member and sleeve effects relativemovementv of said sleeve and second member different. longitudinaldistances along said first member to open and close said port, and meansengaging said sleeve to resist its rotation.

6; Apparatus of the character described, including first, and secondtubular members telescopicallyarranged with respect to each other, each:of sa-id members. being adapted for connection to a casing sectionforming part of a casing string, said first member having a side port, asleeve on said first member for controlling flow of huid through saidlport, means providing a slidable splinedconnection between said sleeveand second member, a first threaded connection between said first andsecond members, a second threaded connection between said Erst memberand sleeve. having a difierent lead from the lead of said first.threaded connection, whereby relativev rotationbetween said first memberand said second member and sleeve effects relative movementaofsaidsleeve and second member different longitudinal distances. along saidfirst member to open and close said port.V

7i. Apparatus. of the character described, including first. and secondtubular members telescopically arranged with respect to each other, eachof' said members being adapted for connection to a casing sectionforming part of a casing string, said firstmember having a side port, asleeve on said first member for controlling fiow of fluid through saidport, means providing a slid able splined connection between said sleeveand second member, a first threaded connection between said rst andsecond members, a second threaded connection between said nrst memberand sleeve. of the same hand as said rst threaded connect-ion but havinga different lead from the lead` of said `first threaded connection,whereby relative rotationbetween said first member and said secondmember and sleeve effects relative movement of said sleeve and secondmember different.v longitudinal distances along said first member toopen and close said port.

8; Apparatus. of the character described, inbinding-any upper tubularmember adapted to be connected to. an upper casing vsection and a lowertubular member adapted to be connected to a lower casing section, saidupper and lower members being telescopically arranged with respect toeach other and forming part of a casing string, said upper member havinga side port, a sleeve on said upper member for controlling flow of iiuidthrough said port and slidably splined to said lower member, a firstthreaded connection between said upper member and sleeve, a secondthreaded connection between said upper and lower members of the samehand as said first threaded connection but having a different lead fromthe lead of said first threaded connection, whereby rotation of saidupper member first edects longitudinal movement of said sleeve alongsaid upper member to port opening position and unthreads said sleevefrom said upper member,

a continuation of the rotation of said upper member in the samedirection then moving said sleeve into engagement with said lower memberto close said port.

9. Apparatus of the character described, including iirst and secondtubular members telescopically arranged with respect to each other, saidmembers having a constantly open central longitudinal passagetherethrough, each of said members having means for connecting' suchmembers to a casing section, said first member having a side port forallowing iiuid flow between the interior and exterior of said firstmember, a sleeve movable longitudinally along said first member tocontrol flow of iiuid through said port, means providing a rst axialinterconnection between one of said tubular members and sleeve in orderthat relative rotation between said one member and sleeve will shiftsaid sleeve along said first member to determine ow of fluid throughsaid port, and means providing a second axial interconnection betweensaid members in order that relative rotation between said members willshift said second member longitudinally with respect to said rst memberand its port to determine iiow of fluid through said port.

10. Apparatus of the character described, including rst and secondtubular members telescopically arranged with respect to each other, eachof said members having means for connecting such member to a casingsection forming part of a casing string, said rst member having a sideport, a sleeve movable longitudinally along said first member forcontrolling iiow of fluid through said port, a rst threaded connectionbetween said first and second members, a second threaded connectionbetween one of said members and sleeve having a different lead from thelead of said first threaded connection, whereby relative rotationbetween said first and second members and between said one of saidmembers and sleeve effects relative movement of said a sleeve on saidfirst member for controlling flow of fluid through said port, means forresisting rotation of said sleeve, a first threaded connection betweensaid first and second members, a second threaded connection between saidfirst member and sleeve having a different lead from the lead of saidfirstV threaded connection, in order that relative rotation between saidfirst member and said second member and sleeve effects relative movementof said sleeve and second member different longitudinal distances alongsaid first member to open and close said port.

12. Apparatus of the character described, including first and secondtubular members telescopically arranged with respect to each other, eachof said members being adapted for connection to a casing section formingpart of a casing string, said first member having a side port, a sleevemovable longitudinally along the exterior of said first member forcontrolling flow of fluid through said port, a first threaded connectionbetween said first and second members, a second threaded connectionbetween said iirst member and sleeve having a different lead from thelead of said first threaded connection, whereby relative rotationbetween said first member and said second member and sleeve effectsrelative movement of said sleeve and second member differentlongitudinal distances along said first member to open and close saidport.

13. Apparatus of the character described, including first and secondtubular members telesoopically arranged with respect to each other, eachof said members being adapted for connection to a casing section formingpart of a casing string, said first member having a side port, a sleeveon said first member for controlling flow of fluid through said port,means for resisting rotation of said sleeve, a first threaded connectionbetween said first and second members, a second threaded connectionbetween said rst member and sleeve of the same hand as said firstthreaded connection but having a different lead from the lead of saidfirst threaded connection, whereby relative rotation between said firstmember and said second member and sleeve effects relative movement ofsaid sleeve and second member different longitudinal distances alongsaid pivot member to open and close said port.

FRANCIS HAMPTON LEE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Italy of 1930

